Attachment hook for safety belts



1932- H. E. CAMPBELL ATTACHMENT HOOK FOR' SAFETY BELTS Filed May 8, 1930 2 Sheets-Sheet INVENTOR Harvyl C am Mall ATTORNEY Oct. 18, 1932. H. -E. CAMPBELL ATTACHMENT 1100K FOR SAFETY mam's Filed May 8, 1930 2-$heets-Sheet 2 mm m W m H part of this specification, wherein like nu r inerals of reference indicate like parts, 1

Patented Oct. 18, 1932 UNITED S ATE s PATENT'VOFFFICE- HARRY n. CAMPBELL, or BALTIMOREQ'MARYLAND,ASSIGNORV r CAMPBELL METAL wrnnow CORPORATION, or BALTIMORE,'MA .RYLAND, n oo'nroan'rron or MABY- LAND . ATTACHMENT noox ron SAFETY, BELTS. H

Application filed May 8, 1930. Serial No. 450,664.

lVly invention relates to improvements in means provided in buildings adjacent the window framesth'ereof forthe attachment.

'of the endsof safety beltsused bywindow cleaners, and more particularly, to'the provision of hooks which are built into the window' frames in the course of production so that the same will be in position when the and whose projecting knobs orheads may be" moved within the confines of the window frames or casing so as to economize space and permit of a greater number offrames or casings being packed in a fr'eightcarfor shipt1 .J V i 1 a lt'is another object of my invention to-provide a window cleaners hook jsecured tothe window 'frame'in such a manner that the strong and rigid window frame creasing-1s utilized to take all the stress to WhlChl the hook is ordinarily subjected.

ther objects will in partbe obviousand base '16 having a slightly raised central p in part be pointed out hereinafter. A To-the attainment of the aforesaid ob ects and ends, my invention consists in the novel features of constructiomand in the combina- 0 tion, connection and arrangement of parts hereinafter described and in the claims. 7 v

In the accompany ng'drawlngs forming then pointed: out

Figure 1 is a front view'partly broken away showings. metal window frame or casing with a pair of attaching hooksapplied thereto constructed according to and embodying my'invention; I i

Fig. 2 is an enlarged detail'transverse sec tion on theline 2-2of Fig. 1;

Fig. 3 is an enlarged detail front view w showing a portion of a-window frame or casing with a hook secured thereto; h

Fig. 4 is an enlarged detail perspective view of a hook detached from its support;

Fig. 5 is an enlarged detail front View, similar to Fig. 3, showing a double hook;

Fig. 6 is an enlarged detail end View of a portion of a window frame or'casing with a modified form ofhook secured thereto;

Fig. 7 is a transverse section on the line of'Fig. 6 showing the hook adjusted'to its inoperative position for shipment, and 5 Fig. 8 is a view similar to Fig. 7, showing the hood adjusted to operative position.

In the drawings 10 designatesa metalwindow frame or casing of well-known constructlon, comprising hollow jambs, or sidemembers 11, and sill 12. Within the jambs ll work the sliding sashes 13, of which only .the'low'er one is shown. I

14 denotes attachment hooks to receive the opposite endsof;a strap or other flexible member movably secured to the belt which is usually worn by window cleaners when workng upon the outside of a window. Each amb or side member 11 is provided in its outwardly projecting portion 11, about midway of its height with a; right-angular horizontal slot 15 which is arranged partly in the outer side of 'the pr0j ecting portion 11, and partlyin the side wall thereof. I Each hook'l l' comprises a substantially fiat tion 1-7 whose outline corresponds to that portion of theslot' 15 di'sposed'in the side "front 'wallfll", after the window frame has been built into the building and enclosed by masonry 20. I V v I The medial portion of the hook is substam tially square in cross section so as to permit of the hook being inserted in the slot 15 of the frame, and it has its inner side cut away. at 21, at right angles to the'normal ofthe base 16, toform a bearing surface adapted to 1 bear against the outer wall ll of the framemember 11, when the hook 14 is adjusted to its projected operative position, as shown at Figs. 1,2 and3, and secured to such position by washer 22 and screw 23 which extends into the raised central portion 17 of the base 16, and'has its head 23 andwasher 22 extending partly beyond the edges of the shank 18 engaging the side wall of the projecting portion 11 of the frame or casing 10.

In assembling the parts of the window frame or casing '10, the hooks 14: are each applied thereto by passing the head 19 and shank 18 through the slot 15 in the side member 11' from within the same, and then adj usting the hook to the position shown in broken lines at Fig. 3, for shipment, in which position the hook 1 L lies whollywithin the geometrical outlines of the frame or casing 10.

When the window frame is properly positioned within the opening 'in'the wall of a building during the process of construction, the hooks 14 are then swung outwardly, as illustrated in full lines at Fig. 2, and secured in place in the side member 11 by the screws 23 and washers 22, and the 'masonry 2O thence completed about the same. When the hook 14 is thus secured in position the entire outer surface of .the base 16 will find a bearing against the interior side of the frame member 11, which latterfloeing madeof metal, will afford .the'necessary support therefor and withstand all strains to which the hook may be subjected in the course of ordinary use.

In Figure 5, I have shown a modification of my invention, wherein two hooks 14 in close proximity are mounted upon a single base 16 and secured within the frame by a screw 23*. This double hook arrangement afi'ords .an increased support 'or attachment for such belts as are provided at their ends of their supporting strap with attaching devices having elongated openings, or double rings or eyes therein to give the 'window cleaner greater security. 3

In Figure 6 to 8, inclusive, I have shown a further modification wherein the hooks 14: are provided on the outer face of the shanks with ears or lugs 14normally perpendicular thereto. When the hook is to be locked in its outer or projected position, the, lugs are struck downwardly ontotheface of the window frame to assume'the positions shown in Figure 8. r g V It is to be noted particularly that by constructing the hook members so as to be capable of adjustment wholly within the outlines of the window frame all danger of injury to either the hooks or frames. on-the course of handling or transportation will be obviated. Further, by; so constructing the parts, it be- 7 comes possible to pack a greater number of frames in a freight car or other vehicle since the necessity for providing spacing blocks or strips between window frames in orderto prevent damage to either the hooks or frames is obviated.

Having thus described my said invention, what I claim and desire to secure by Letters Patent is: V a

1. A window frame including an attachment device having a portion adapted normally tooccupy a position within the outline of said frame, means for movably supporting said device upon said frame and to permit of the adjustment of said portion of the device to a position projecting outwardly beyond the outline of the frame, and means for securing said device to its projected position, substantially as specified.

2. A window frame including an attachment device having a portion adapted nor mally to occupy an inoperative position within the outline of said frame, means forpivotally supporting said device upon the frame and to permit of the adjustment of said portion of the device to an operative position projecting outwardly beyond the outline of the frame,.and means for securing said device to its projected position, substantially as specified.

3. A-window frame including an attachment device having a portion adapted normally to occupy a position within the outline of said frame, means for retaining said device against withdrawal from the frame, means for movably supporting said device upon the frame and to permit of the adjustment of said portion of the device to a posi tion projecting outwardly beyond the outline of the frame, and means for securing said deviceto its projected position, substantially. as specified. 4. A window frame having an aperture in the wall thereof,'an attachment device having a portion adapted normally to occupy a position within the outline of said frame,

and another portion pivotally and slidably mounted insaid aperture, to permit of the adjustment of said portion of the device to a position projecting outwardly beyond the outline of the frame, and means for securing said device to its projected position, substantially as specified.

' 5; A window frame having an aperture in'the wall thereof, having a portion adapted normally to occupy a position within the outline of said frame, means at the inner end of said device for preventing the withdrawal thereof from said frame, means for movably supporting said device upon the frame and to permit of the adjustment of said portion of the device to a position projecting angularly outwardly beyond the outline of the frame, and means for securing said device to its projected position, substantially as specified.

6. A window frame having an aperture in the side wall'thereof, an attachment device comprising a shank having an outer end portion, an engageable member carried thereby, and retaining means at its inner end portion; said outer end portion being adapted normally to occupy a position within the outline of said frame, means for movably supporting said device intermediate its ends within said aperture to permit of the adj ustment of said outer end portion to a position V projecting angularly-outwardly beyond the outline of said frame, and means for positively securing said deviceto its projected position, substantially as specified.

7. A window frame having a slot'in the wall thereof, an attachment device having a head end adapted to project outwardly be-i yond the outer wall of said frame, and a shank end slidablyand pivotally mounted in said slot whereby said head end maybe swung inwardly behind said wall, means on said shank for preventing the same being withdrawn from said unit, and means where-. by said head end may be locked in its outer operative position, substantially as specified.

' 8. A structural unit having a slotin a corner of the wall thereof, an attachment device having an outer head end adapted to project outwardly beyond the wall of said unit, and a shank end pivotally and slidably mounted in said slot whereby said head end may be swung inwardly behind said wall,

and a part on the inner face. of said shank and overlying the edges thereof; the overlying face of said part being'adapted to contact the inner side of the'wall of said unit to prevent the shank end from being withdrawn from said unit, and means whereby said device may be lockedin outer operative position, substantially as specified.

9. A structural unithavlng'a slot in the wall thereof, an attachment device having'an 11. A device of the character described comprising a bell-crank member, a wedgeshaped. arm tapering outwardly, a hook element projecting angularly from the wide outer end of said arm,a second flat arm substantially perpendicular to said first arm, and a part superimposed on said second arm and overlying the edges thereof, substantially as specified.

12. A hollow window frame including a plurality of side walls and slots therein,;an attachment device comprising a substantially-flat base disposed wholly within said frame, members projecting outwardly from one edge of said base and through said slots, and a head at the outer end of each of said members; said base having a fiat face portion conforming to and bearing against the inner side of one of the side walls of said frame, and said outwardly projecting memher having a faceportion disposed at right angles to the flat face of said base and conforming to and bearing against the outer side of a frame side wall adjoining said side. vwall first-named, substantially as specified.- 1

' Signed at the city of New York, in the county of New York, State of New York, this 25th day of-April, one thousand nine hundred and thirty.

* HARRY E. CAMPBELL.

outer head end adapted to projectoutwardly beyond the'wall of saidunit, and a shankendpivotally, and slidably mounted in said slot whereby said headend'may be swung inward-' ly behind said wall, means for preventing the withdrawal of said shank end from said slot comprising a part on the inner face thereof overlying the edges of said shank, said part being adapted to bear against the inner side through slot in the wall thereof, an attachment device having an outer head portion adapted to project beyondthe outer frame wall, an intermediate portionshaped to conform to and adapted to bear against the outer s 7 frame wall adjacent one-end of the slot, and i an inner shank portion pivotally andslidably r mounted in the slot whereby said head end may be swung outwardly of said'outer frame wall; said shank portion being shaped to con form to and adapted to bear against the inner,

frame wall adjacent another end of said slot, and means whereby the hookmay be locked in its outer operative position, substantially as specified. 

